Bearing damage monitoring device

Abstract

The utility model relates to bearing monitoring technical field discloses bearing damage monitoring devices for monitoring the bearing under test, bearing damage monitoring device includes: bottom plate, support component, support component with the bearing under test is connected, transverse cylinder, the transverse cylinder abuts on support component. That bearing damage monitoring device, through the cooperation between each part, because the transverse cylinder length is the fixed value, the distance between endoscope probe and the bearing under test after moving is determined, at the same time, the inner wall of the hole on the transverse cylinder for endoscope probe to penetrate, the endoscope probe is oriented and radial location effect, the abutment cooperation of the abutment ring and the transverse cylinder end face and the fixed length structure of transverse cylinder, reduce the observation position deviation and lens extension length change caused by artificial insertion or single push mode, start endoscope probe can carry out monitoring operation to the bearing under test, improve the consistency of damage image acquisition position.

Description

Technical Field

[0001] This utility model relates to the field of bearing monitoring technology, specifically a bearing damage monitoring device. Background Technology

[0002] With the widespread application of variable frequency drive technology in new energy vehicles, rail transit, wind power generation, and industrial servo systems, electrical corrosion of motor bearings has gradually become a significant factor affecting the reliability of motor systems. The high voltage rise rate and common-mode voltage generated by high-speed switching devices can couple to the shaft and bearing system via stray capacitance within the motor. When the voltage between the bearing raceway and rolling elements exceeds the lubricating oil film breakdown threshold, spark discharge occurs, leading to damage such as molten pits, pitting, and washboard marks on the raceway or rolling element surfaces. This damage further increases vibration and noise, deteriorates lubrication, and shortens bearing life; in severe cases, it can cause motor seizure or shutdown.

[0003] Existing bearing electrocorrosion testing equipment typically evaluates and tests the condition of bearings by measuring shaft voltage, shaft current, or vibration signals. However, actual morphological damage often requires disassembly and shutdown for observation. When using an endoscope for in-situ observation, if the endoscope is manually inserted or pushed by a single push rod, problems such as insufficient repeatability of observation positions, changes in the extension length of the lens, and mechanical interference of components can easily occur, making it difficult to correspond images at different test stages. Utility Model Content

[0004] The purpose of this invention is to provide a bearing damage monitoring device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bearing damage monitoring device, which is used to monitor a bearing under test. The bearing damage monitoring device includes: a base plate, a support assembly connected to the bearing under test, a horizontal cylinder abutting against the support assembly, a retaining ring abutting against the surface of the horizontal cylinder away from the support assembly, multiple endoscope probes, each endoscope probe penetrating the retaining ring and the horizontal cylinder, each endoscope probe being fixedly connected to the retaining ring, the outer wall of each endoscope probe being clearance-fitted with the through wall of the horizontal cylinder, a crossbar fixedly connected to the surface of the retaining ring, an electric push rod, the output shaft of the electric push rod being fixedly connected to the crossbar, and a connecting frame fixedly mounted on the body of the electric push rod, the bottom end of the connecting frame being fixedly connected to the upper surface of the base plate.

[0006] Optionally, the support assembly includes: a vertical plate fixedly connected to the upper surface of the base plate, the vertical plate having an internal cavity; a cover abutting against one side surface of the vertical plate; a rotating shaft rotatably connected to the cover and passing through the cover; a bearing to be tested fitted on the outer wall of the rotating shaft; the inner ring of the bearing to be tested being interference-fitted with the rotating shaft; and the outer ring of the bearing to be tested being transition-fitted with the contact surface of the vertical plate.

[0007] Optionally, it further includes: a motor bracket, the bottom end of which is fixedly connected to the upper surface of the base plate; a motor, the motor bracket being fixedly mounted on the motor body; a coupling, the coupling being used to connect the output shaft of the motor to the rotating shaft; and a sleeve plate, the sleeve plate being rotatably connected to the outer wall of the rotating shaft, the bottom end of which is fixedly connected to the upper surface of the base plate.

[0008] Optionally, it further includes: a first sealing ring abutting between the cover and the upright plate, and a second sealing ring abutting between the cross cylinder and the upright plate.

[0009] Optionally, it further includes: a temperature sensor probe, the temperature sensor probe being fixedly installed on the front surface of the upright plate, the monitoring point of the temperature sensor probe being located in the cavity inside the upright plate; and two vibration sensor probes, one of which is fixedly installed on the top of the upright plate and the other of which is fixedly installed on the rear surface of the upright plate, the monitoring points of the two vibration sensor probes being located in the cavity inside the upright plate.

[0010] Optionally, it further includes: a first oil injection connector, which is fixedly installed on the top of the outer wall of the cover, and the oil discharge end of the first oil injection connector is connected to the interior of the cover; a first oil discharge connector, which is fixedly installed on the bottom of the outer wall of the cover, and the oil inlet end of the first oil discharge connector is connected to the interior of the cover; a second oil injection connector, which is fixedly installed on one side of the top of the outer wall of the cross cylinder, and the oil discharge end of the second oil injection connector is connected to the interior of the cross cylinder; and a second oil discharge connector, which is fixedly installed on one side of the bottom of the outer wall of the cross cylinder, and the oil inlet end of the second oil discharge connector is connected to the interior of the cross cylinder.

[0011] Optionally, it also includes: a U-shaped clip, which abuts against the top of the outer wall of the cross cylinder; and two bolts, which pass through the top ends of the U-shaped clip respectively, and are threadedly connected to the support plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This bearing damage monitoring device has the following advantages: Through the coordinated operation of various components, the operator first places the inner ring of the bearing under test onto the outer wall end of the rotating shaft. The outer ring of the bearing under test abuts against the inner wall of the vertical plate. Then, the horizontal cylinder is placed on the outer wall of multiple endoscope probes. The electric push rod is activated, causing the horizontal rod, the abutment ring, and the endoscope probes to move towards the bearing under test. During this process, the abutment ring generates a thrust on the horizontal cylinder, causing the horizontal cylinder to contact and abut against the vertical plate. Since the length of the horizontal cylinder is a fixed value, the distance between the endoscope probe and the bearing under test after movement is determined. At the same time, the inner wall of the hole on the horizontal cylinder through which the endoscope probe passes plays a guiding and radial limiting role for the endoscope probe. The abutment ring and the end face of the horizontal cylinder abut against each other and the fixed length structure of the horizontal cylinder together determine the axial observation position of the endoscope probe, allowing the endoscope probe to be repeatedly moved to the preset observation position in different test stages. This reduces the observation position deviation and lens extension length variation caused by manual insertion or single pushing methods. Once the endoscope probe is activated, the bearing under test can be monitored, improving the consistency of the damage image acquisition position.

[0013] Through the coordinated operation of various components, a safe gap is maintained between the endoscope probe and other components during the movement of the endoscope probe, preventing mechanical interference and ensuring high safety and reliability of the device operation.

[0014] Through the coordinated operation of various components, during the monitoring of the bearing under test by the endoscope probe, the operator starts the motor, and the shaft can be rotated through the transmission of the coupling. Since the inner and outer rings of the bearing under test are respectively in contact with the shaft and the inner wall of the vertical plate, relative movement can be generated between the inner and outer rings of the bearing under test, so that the endoscope probe can monitor the condition of the bearing under test after the operation, and the monitoring results are more comprehensive.

[0015] By coordinating the various components, before the monitoring operation begins, the operator can inject an appropriate amount of bearing lubricating oil into the housing through the first oil injection joint and into the horizontal cylinder through the second oil injection joint (the oil level should not exceed the hole on the horizontal cylinder through which the endoscope probe passes). This provides lubrication for the relative movement of the inner and outer rings of the bearing under test, simulating the actual operating state of the bearing under test and improving the accuracy of the monitoring results.

[0016] Through the coordinated operation of various components, the temperature sensor probe and the vibration sensor probe are in working condition during the monitoring operation. When they are running, they can monitor the surface temperature and vibration values ​​of the bearing under test respectively, thereby further improving the comprehensiveness of the monitoring results.

[0017] Through the coordinated operation of various components, after the monitoring operation is completed, the operator disconnects the power to all electrical components, drains the injected bearing lubricating oil through the first and second oil drain connectors, and manipulates the electric push rod to move the crossbar, the abutment ring, and the endoscope probe away from the bearing to be tested and reset them. At this time, the cross cylinder is pulled out from the endoscope probe, the fasteners connecting the upright plate and the base plate are loosened, and the bearing to be tested 5 can be removed from the rotating shaft 4 by using a special pulling tool or auxiliary disassembly tool.

[0018] Through the coordinated operation of various components, the shaft can be separated from the motor output shaft via a coupling. Furthermore, since both the vertical plate and the sleeve plate are fixedly connected to the base plate with fasteners, the shaft and the vertical plate can be disassembled and removed to allow for the selection of shafts with different outer diameters and vertical plates with different cavity sizes for different bearing models. Attached Figure Description

[0019] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 2 Front view partial sectional view; Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0021] In the diagram: 1. Base plate, 2. Vertical plate, 3. Cover, 4. Rotating shaft, 5. Bearing to be tested, 6. Horizontal cylinder, 7. Abutment ring, 8. Endoscope probe, 9. Crossbar, 10. Electric push rod, 11. Connecting frame, 12. Sleeve plate, 13. Motor, 14. Coupling, 15. Motor bracket, 16. Support plate, 17. First sealing ring, 18. Second sealing ring, 19. Temperature sensor probe, 20. Vibration sensor probe, 21. First oil filling connector, 22. First oil drain connector, 23. Second oil filling connector, 24. Second oil drain connector, 25. U-shaped clamp, 26. Bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 4 The technical solution of this utility model is as follows: A bearing damage monitoring device is used to monitor a bearing 5 to be tested. The bearing damage monitoring device includes: a base plate 1, a support assembly, the support assembly being connected to the bearing 5 to be tested, a horizontal cylinder 6, the horizontal cylinder 6 abutting against the support assembly, a retaining ring 7, the retaining ring 7 abutting against the surface of the horizontal cylinder 6 away from the support assembly, an endoscope probe 8, multiple endoscope probes 8 are provided, the multiple endoscope probes 8 all penetrate the retaining ring 7 and the horizontal cylinder 6, the multiple endoscope probes 8 are all fixedly connected to the retaining ring 7, the outer wall of the multiple endoscope probes 8 is clearance-fitted with the through wall of the horizontal cylinder 6, a horizontal rod 9, the horizontal rod 9 is fixedly connected to the surface of the retaining ring 7, an electric push rod 10, the output shaft of the electric push rod 10 is fixedly connected to the horizontal rod 9, and a connecting frame 11, the connecting frame 11 is fixedly mounted on the body of the electric push rod 10, the bottom end of the connecting frame 11 is fixedly connected to the upper surface of the base plate 1.

[0024] In the specific implementation process, it is worth noting that the base plate 1, as the overall installation foundation, has a reserved terminal block on its surface to provide a power connection base for the cables of various electrical components. The cross cylinder 6 mainly serves as a guide and radial limiter. The axial observation position is determined by the fixed length of the cross cylinder 6, the contact between the abutment ring 7 and the end face of the cross cylinder 6, and the position control of the electric push rod 10. The image signal cable and power supply cable of the endoscope probe 8 are led out from the tail of the endoscope probe 8, i.e., the side close to the electric push rod 10. The cables of multiple endoscope probes 8 can be shielded cables and bundled separately to reduce mutual signal interference. The cross rod 9 connects the abutment ring 7 and the output end of the electric push rod 10, transmitting thrust to make the endoscope probe 8 move synchronously as a whole. The control cable and position feedback cable of the electric push rod 10 are led out from the side of the connecting frame 11 and connected to the external control unit to achieve precise position control. The position feedback signal can provide real-time feedback on the push rod stroke to ensure that the endoscope probe 8 can reach the same observation position every time. The connecting frame 11 is fixed on the base plate 1 to provide stable support for the electric push rod 10.

[0025] Furthermore, the support components include: a vertical plate 2, which is fixedly connected to the upper surface of the base plate 1, and the interior of the vertical plate 2 is provided with a cavity; a cover 3, which abuts against one side surface of the vertical plate 2; a rotating shaft 4, which is rotatably connected to the cover 3 and passes through the cover 3; and a bearing 5 to be tested, which is fitted on the outer wall of the rotating shaft 4, with the inner ring of the bearing 5 to be tested having an interference fit with the rotating shaft 4 and the outer ring of the bearing 5 to be tested having a transition fit with the contact surface of the vertical plate 2.

[0026] In the specific implementation process, it is worth noting that the cover 3 is rotatably connected to the rotating shaft 4 through the bearing. The inner ring of the bearing 5 under test is interference-fitted with the rotating shaft 4, and the outer ring is transition-fitted with the vertical plate 2. This ensures that when the bearing is running, the inner ring rotates synchronously with the rotating shaft 4, while the outer ring remains relatively stationary. The internal space of the horizontal cylinder 6 allows the endoscope probe 8 to pass through. When the horizontal cylinder 6 is made of insulating material, it can avoid electromagnetic interference to the internal signal cables. The abutment ring 7 is fixed to the outer circumference of the endoscope probe 8, which allows the endoscope probe 8 to move synchronously with the abutment ring 7. The abutment ring 7 pushes the horizontal cylinder 6 to abut against the vertical plate 2, thereby achieving the axial positioning of the endoscope probe 8. The vertical plate 2, the support plate 16, the connecting frame 11, the sleeve plate 12, and the motor bracket 15 are all fixedly connected to the base plate 1 by fasteners, which are screws and nuts.

[0027] Furthermore, it also includes: a motor bracket 15, the bottom end of which is fixedly connected to the upper surface of the base plate 1; a motor 13, the motor bracket 15 being fixedly mounted on the body of the motor 13; a coupling 14, which is used to connect the output shaft of the motor 13 to the rotating shaft 4; and a sleeve 12, which is rotatably connected to the outer wall of the rotating shaft 4, the bottom end of which is fixedly connected to the upper surface of the base plate 1.

[0028] In the specific implementation process, it is worth noting that the motor bracket 15 is fixedly mounted on the body of the motor 13, and its bottom end is fixedly connected to the base plate 1, providing stable support for the motor 13. The motor 13 serves as a power source to provide driving force for the rotation of the shaft 4. The speed of the motor 13 can be adjusted by an external controller to simulate the operating state of the bearing 5 under different speed conditions. The power supply cable and control cable of the motor 13 can be shielded cables to reduce the impact of electromagnetic interference generated during motor start-up, shutdown and speed adjustment on other sensor signals. The coupling 14 connects the output shaft of the motor 13 and the shaft 4 to transmit torque. The coupling 14 is a detachable coupling. The sleeve plate 12 is rotatably connected to the shaft 4 through an insulated bearing, and its bottom end is fixedly connected to the base plate 1 to provide auxiliary support for the shaft 4.

[0029] Furthermore, it also includes: a support plate 16, the top of which is attached to the outer wall of the cross cylinder 6, and the bottom of which is fixedly connected to the upper surface of the base plate 1.

[0030] In the specific implementation process, it is worth noting that the top of the support plate 16 is attached to the outer wall of the horizontal cylinder 6 to provide radial support for the horizontal cylinder 6, preventing the horizontal cylinder 6 from sagging or shifting due to its own weight or the thrust when the endoscope probe 8 moves, ensuring the docking accuracy between the horizontal cylinder 6 and the vertical plate 2, and the bottom of the support plate 16 is fixedly connected to the base plate 1 to form a stable support structure.

[0031] Furthermore, it also includes: a first sealing ring 17, which abuts between the cover 3 and the upright plate 2, and a second sealing ring 18, which abuts between the horizontal cylinder 6 and the upright plate 2.

[0032] In the specific implementation process, it is worth noting that the first sealing ring 17 abuts between the cover 3 and the vertical plate 2 to form a static sealing structure, preventing the lubricating oil in the cavity of the cover 3 from leaking from the joint surface. The second sealing ring 18 abuts between the horizontal cylinder 6 and the vertical plate 2, also forming a static sealing structure, preventing the lubricating oil in the cavity of the horizontal cylinder 6 from leaking from the joint surface, and maintaining the oil level stability in the cavity.

[0033] Furthermore, it also includes: a temperature sensor probe 19, which is fixedly installed on the front surface of the upright plate 2, and the monitoring point of the temperature sensor probe 19 is located in the cavity inside the upright plate 2; and two vibration sensor probes 20, one of which is fixedly installed on the top of the upright plate 2 and the other is fixedly installed on the rear surface of the upright plate 2, with the monitoring points of the two vibration sensor probes 20 located in the cavity inside the upright plate 2.

[0034] In the specific implementation process, it is worth noting that the temperature sensor probe 19 is fixedly installed on the front surface of the vertical plate 2, with its monitoring end extending into the internal cavity of the vertical plate 2. It can monitor the temperature change near the outer ring of the bearing 5 under test in real time, reflecting the thermal state of the bearing during operation. The signal cable is led out directly from the temperature sensor probe 19 away from the monitoring end, laid along the front surface of the vertical plate 2, and then connected to the external data acquisition unit. The cable can be a shielded cable to reduce the influence of external electromagnetic interference on the temperature signal. Two vibration sensor probes 20 are distributed along the XY direction and set perpendicular to each other, respectively installed on the top and rear surfaces of the vertical plate 2. The monitoring ends of both probes extend into the internal cavity of the vertical plate 2, collecting data from the bearing under test from two orthogonal directions. The vibration signal of the bearing 5 can more comprehensively capture the vibration characteristics of the bearing in different directions, avoiding the damage information that may be missed by monitoring in a single direction. The signal cable of the vibration sensor probe 20 is also led out from the end far from the detection end and laid along the top and rear surfaces of the vertical plate 2 respectively. The cables of the two types of sensors are connected to the external data acquisition unit for synchronous acquisition. Together with the image data acquired by the endoscope probe 8, they form a multi-dimensional monitoring dataset, which comprehensively reflects the operating status and damage of the bearing 5 under test. The data acquisition unit can be set with a unified triggering mechanism to ensure that the temperature signal, vibration signal and image data are acquired at the same time, ensuring the accurate time correspondence of the three types of data, which is convenient for subsequent data analysis and damage assessment.

[0035] Furthermore, it also includes: a first oil injection connector 21, which is fixedly installed on the top of the outer wall of the cover 3, with the oil discharge end of the first oil injection connector 21 connected to the interior of the cover 3; a first oil discharge connector 22, which is fixedly installed on the bottom of the outer wall of the cover 3, with the oil inlet end of the first oil discharge connector 22 connected to the interior of the cover 3; a second oil injection connector 23, which is fixedly installed on one side of the top of the outer wall of the cross cylinder 6, with the oil discharge end of the second oil injection connector 23 connected to the interior of the cross cylinder 6; and a second oil discharge connector 24, which is fixedly installed on one side of the bottom of the outer wall of the cross cylinder 6, with the oil inlet end of the second oil discharge connector 24 connected to the interior of the cross cylinder 6.

[0036] In the specific implementation process, it is worth noting that the first oil injection connector 21 is fixedly installed on the top of the outer wall of the cover 3 and is used to inject bearing lubricating oil into the cavity of the cover 3. The oil discharge end of the oil injection connector is connected to the inside of the cover 3, so that the lubricating oil can smoothly enter the cavity and lubricate one side of the bearing 5 to be tested. The first oil discharge connector 22 is fixedly installed on the bottom of the outer wall of the cover 3 and is used to discharge the lubricating oil in the cavity of the cover 3 after the test. The second oil injection connector 23 is fixedly installed on the top side of the outer wall of the horizontal cylinder 6 and is used to inject bearing lubricating oil into the cavity of the horizontal cylinder 6. The second oil discharge connector 24 is fixedly installed on the bottom side of the outer wall of the horizontal cylinder 6 and is used to discharge the lubricating oil in the cavity of the horizontal cylinder 6. The setting position of the second oil injection connector 23 avoids the horizontal setting area of ​​the endoscope probe 8. The oil volume is precisely controlled during the oil injection operation and will not overflow the horizontally arranged holes on the horizontal cylinder 6 and cause leakage.

[0037] Furthermore, it also includes: a U-shaped clip 25, which abuts against the top of the outer wall of the cross cylinder 6; two bolts 26, which pass through the top two ends of the U-shaped clip 25 respectively; and the bolts 26 are threadedly connected to the support plate 16.

[0038] In the specific implementation process, it is worth noting that when the horizontal cylinder 6 is in the abutting state, the operator can use a U-shaped clip 25 to fit on its outer wall and use bolts 26 to fix it above the support plate 16. The U-shaped clip 25 is fixed with a rubber anti-slip pad against the surface of the horizontal cylinder 6, which can fully fix the horizontal cylinder 6 above the support plate 16. In this way, when the motor 13 is started to rotate the inner and outer rings of the bearing 5 to be tested, the electric push rod 10 can be driven to move the endoscope probe 8 away from the bearing 5 to be tested, preventing oil from splashing onto the surface of the endoscope probe 8 and affecting subsequent monitoring operations. After the horizontal cylinder 6 is fixed by the U-shaped clip 25, the horizontal cylinder 6 and the vertical plate 2 can maintain a stable abutting position, and the second sealing ring 18 can reduce the risk of lubricating oil leakage.

[0039] Working principle: Endoscopic positioning principle: When the bearing 5 under test is installed, its inner ring is fitted onto the outer end of the rotating shaft 4, and the outer ring abuts against the inner wall of the vertical plate 2. The horizontal cylinder 6 is fitted onto the outer wall of multiple endoscope probes 8. After the electric push rod 10 is started, it drives the endoscope probe 8 towards the bearing 5 under test through the horizontal rod 9 and the abutment ring 7. During the movement, the abutment ring 7 pushes the horizontal cylinder 6 to contact and abut against the vertical plate 2. The distance between the endoscope probe 8 and the bearing 5 under test is determined by the fixed length characteristic of the horizontal cylinder 6. At the same time, the inner wall of the through hole on the horizontal cylinder 6 forms an axial and radial limit on the endoscope probe 8, so that the endoscope probe 8 can be repeatedly moved to the preset observation position in different test stages. This reduces the deviation of the observation position and the change of the lens extension length caused by manual insertion or single pushing method, and improves the consistency of the damage image acquisition position. The endoscope probe 8 leaves a safe clearance with other components throughout the entire movement stroke to avoid mechanical interference.

[0040] Bearing operation drive: During monitoring, motor 13 drives shaft 4 to rotate via coupling 14. Because the inner ring of the bearing under test 5 has an interference fit with shaft 4 and the outer ring has a transition fit with vertical plate 2, relative motion occurs between the inner and outer rings of the bearing under test 5 when shaft 4 rotates, simulating the actual operating conditions of the bearing. When image monitoring is required, the bearing under test 5 is kept stationary, and the endoscope probe 8 monitors the damage state of the bearing under test 5 after operation, thereby obtaining damage images that closely resemble actual operating conditions. Sleeve plate 12 provides auxiliary support to the free end of shaft 4, improving the operational stability of shaft 4.

[0041] Lubrication condition simulation: Before monitoring, appropriate amounts of bearing lubricating oil are injected into the inside of the cover 3 through the first oil injection joint 21 and into the inside of the horizontal cylinder 6 through the second oil injection joint 23. The oil level is controlled so as not to overflow the hole in the horizontal cylinder 6 through which the endoscope probe 8 passes. The lubricating oil provides lubrication for the relative movement of the inner and outer rings of the bearing under test 5, simulating the operating state of the bearing under real lubrication conditions, making the monitoring environment closer to the actual working conditions, and improving the accuracy of the monitoring results. The first sealing ring 17 and the second sealing ring 18 are respectively set between the cover 3 and the vertical plate 2, and between the horizontal cylinder 6 and the vertical plate 2 to prevent lubricating oil leakage.

[0042] Multi-parameter synchronous monitoring: During the monitoring period, temperature sensor probe 19 and vibration sensor probe 20 are in operation. The monitoring point of temperature sensor probe 19 is located in the cavity inside the vertical plate 2, which monitors the surface temperature change of the bearing under test 5 in real time during operation. The two vibration sensor probes 20 are respectively installed on the top and rear surfaces of the vertical plate 2, and collect vibration signals of the bearing under test 5 from different directions. Temperature, vibration and endoscopic images are collected simultaneously to reflect the bearing damage status from multiple dimensions and further improve the comprehensiveness of the monitoring results.

[0043] Disassembly and assembly adaptation principle: After monitoring is completed, the lubricating oil is drained through the first oil drain connector 22 and the second oil drain connector 24. The electric push rod 10 is operated to drive the endoscope probe 8 to reset. After the horizontal cylinder 6 is pulled out, the fasteners between the vertical plate 2 and the bottom plate 1 are loosened, and the bearing to be tested 5 can be pulled out from the rotating shaft 4 and removed from the vertical plate 2. Since the rotating shaft 4 is connected to the output shaft of the motor 13 through the coupling 14, and both the vertical plate 2 and the sleeve plate 12 are fixedly connected to the bottom plate 1 through fasteners, the rotating shaft 4 and the vertical plate 2 can be disassembled and replaced so that the corresponding outer diameter of the rotating shaft 4 and the corresponding cavity size of the vertical plate 2 can be selected for matching according to different bearing models.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bearing damage monitoring device, characterized in that, The bearing damage monitoring device is used to monitor the bearing under test (5), and the bearing damage monitoring device includes: Base plate (1); A support assembly is connected to the bearing to be tested (5); A horizontal cylinder (6) abuts against the support assembly; Abutting ring (7) abuts against the surface of the cross cylinder (6) away from the support assembly; Endoscope probe (8), multiple endoscope probes (8) are provided, multiple endoscope probes (8) all penetrate the abutment ring (7) and the cross cylinder (6), multiple endoscope probes (8) are fixedly connected to the abutment ring (7), and the outer wall of multiple endoscope probes (8) is gap-fitted with the through wall of the cross cylinder (6); A crossbar (9) is fixed to the surface of the abutment ring (7); An electric push rod (10) is provided, the output shaft of which is fixedly connected to the crossbar (9). A connecting frame (11) is fixedly mounted on the body of the electric push rod (10), and the bottom end of the connecting frame (11) is fixedly connected to the upper surface of the base plate (1).

2. The bearing damage monitoring device according to claim 1, characterized in that, The support components include: The upright plate (2) is fixedly connected to the upper surface of the base plate (1), and the interior of the upright plate (2) is provided with a cavity; Cover (3), which abuts against one side surface of the upright plate (2); A rotating shaft (4) is rotatably connected to the cover (3) and the rotating shaft (4) passes through the cover (3). The bearing to be tested (5) is mounted on the outer wall of the rotating shaft (4). The inner ring of the bearing to be tested (5) is interference-fitted with the rotating shaft (4), and the outer ring of the bearing to be tested (5) is transition-fitted with the contact surface of the vertical plate (2).

3. The bearing damage monitoring device according to claim 2, characterized in that, Also includes: Motor bracket (15), the bottom end of which is fixedly connected to the upper surface of the base plate (1); The motor (13) is fixedly mounted on the body of the motor (13); Coupling (14), the coupling (14) is used to connect the output shaft of the motor (13) to the rotating shaft (4); Sleeve plate (12) is rotatably connected to the outer wall of the rotating shaft (4), and the bottom end of the sleeve plate (12) is fixedly connected to the upper surface of the base plate (1).

4. The bearing damage monitoring device according to claim 1, characterized in that, Also includes: The top end of the tray (16) is attached to the outer wall of the cross cylinder (6), and the bottom end of the tray (16) is fixedly connected to the upper surface of the base plate (1).

5. The bearing damage monitoring device according to claim 2, characterized in that, Also includes: The first sealing ring (17) abuts between the cover (3) and the upright plate (2); The second sealing ring (18) abuts between the horizontal cylinder (6) and the vertical plate (2).

6. The bearing damage monitoring device according to claim 2, characterized in that, Also includes: Temperature sensor probe (19) is fixedly installed on the front surface of the upright plate (2), and the monitoring point of the temperature sensor probe (19) is located in the cavity inside the upright plate (2). Vibration sensor probe (20), two vibration sensor probes (20) are provided, one vibration sensor probe (20) is fixedly installed on the top of the upright plate (2), and the other vibration sensor probe (20) is fixedly installed on the rear surface of the upright plate (2). The monitoring points of the two vibration sensor probes (20) are located in the cavity inside the upright plate (2).

7. The bearing damage monitoring device according to claim 2, characterized in that, Also includes: The first oil injection connector (21) is fixedly installed on the top of the outer wall of the cover (3), and the oil discharge end of the first oil injection connector (21) is connected to the inside of the cover (3). The first oil drain connector (22) is fixedly installed on the bottom of the outer wall of the cover (3), and the oil inlet end of the first oil drain connector (22) is connected to the inside of the cover (3); The second oil injection connector (23) is fixedly installed on one side of the top of the outer wall of the cross cylinder (6), and the oil discharge end of the second oil injection connector (23) is connected to the interior of the cross cylinder (6); The second oil drain connector (24) is fixedly installed on the bottom side of the outer wall of the cross cylinder (6), and the oil inlet end of the second oil drain connector (24) is connected to the interior of the cross cylinder (6).

8. The bearing damage monitoring device according to claim 4, characterized in that, Also includes: U-shaped clip (25), the U-shaped clip (25) abuts against the top of the outer wall of the cross cylinder (6); Two bolts (26) are provided, and the two bolts (26) pass through the top two ends of the U-shaped card (25) respectively. The bolts (26) are threadedly connected to the tray (16).

Images